{"id":52380,"date":"2024-12-03T15:03:05","date_gmt":"2024-12-03T07:03:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52380\/"},"modified":"2024-12-03T15:03:05","modified_gmt":"2024-12-03T07:03:05","slug":"vue3-2-%e7%88%b6%e5%ad%90%e7%bb%84%e4%bb%b6%e4%bc%a0ref%e6%95%b0%e7%bb%84%e7%9b%91%e5%90%ac%e5%a4%b1%e6%95%88%e7%9a%84%e5%8e%9f%e5%9b%a0%e5%92%8c%e8%a7%a3%e5%86%b3%e6%96%b9%e6%b3%95%e6%98%af%e4%bb%80","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52380\/","title":{"rendered":"Vue3.2 \u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u5931\u6548\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Vue3.2 \u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u5931\u6548\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aVue3.2 \u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u5931\u6548\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n

\"Vue3.2<\/p>\n

vue3.2\u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u95ee\u9898\u89e3\u7b54<\/strong><\/p>\n

\u5728\u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u5e76\u76d1\u542c\u65f6\uff0c\u5982\u679c\u5728\u5b50\u7ec4\u4ef6\u7684watch\u4e2d\u4e0d\u52a0\u4e0a\u7bad\u5934\u51fd\u6570\u5305\u88f9\uff0c\u5219\u76d1\u542c\u4e0d\u4f1a\u751f\u6548\u3002\u8fd9\u4e3b\u8981\u662f\u56e0\u4e3a\uff1a<\/p>\n

\u5b98\u65b9api\u8bf4\u660e<\/strong><\/p>\n

\u6839\u636e\u5b98\u65b9api\u8bf4\u660e\uff0cwatch\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u53ef\u4ee5\u662fref\u6216getter\u51fd\u6570\uff1a<\/p>\n

watch(watchersource, callback, [watchoptions])\n\ntype watchersource<t> = ref<t> | (() => t) <\/pre>\n
\u6b63\u786e\u7528\u6cd5<\/strong><\/p>\n
\u56e0\u6b64\uff0c\u5728\u5b50\u7ec4\u4ef6\u7684watch\u4e2d\uff0c\u5e94\u5c06tabledata\u6570\u636e\u6e90\u5199\u6210getter\u51fd\u6570\u7684\u5f62\u5f0f\uff0c\u5e76\u9700\u8981\u52a0\u4e0adeep: true\u9009\u9879\uff1a<\/p>\n
watch(\n  tableData,\n  (newVal) => {...},\n  { deep: true }\n);<\/pre>\n
\u8865\u5145\u8bf4\u660e<\/strong><\/p>\n
\u5f53\u6211\u4eec\u4f7f\u7528watch\u4fa6\u542c\u5f15\u7528\u5bf9\u8c61\u65f6\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\uff1a<\/p>\n
    \n
  • \n
    ref\u5b9a\u4e49\u7684\u5f15\u7528\u5bf9\u8c61\uff1a<\/strong><\/p>\n
      \n
    • \u83b7\u53d6\u5f53\u524d\u503c\uff1awatch\u7b2c\u4e00\u4e2a\u53c2\u6570\u76f4\u63a5\u5199\u6210\u6570\u636e\u6e90\uff0c\u9700\u52a0deep: true\u9009\u9879<\/li>\n
    • \u83b7\u53d6\u5f53\u524d\u503c\u548c\u5148\u524d\u503c\uff1awatch\u7b2c\u4e00\u4e2a\u53c2\u6570\u5199\u6210getter\u51fd\u6570\uff0c\u5bf9\u6570\u636e\u6e90\u6df1\u62f7\u8d1d<\/li>\n<\/ul>\n<\/li>\n
    • \n
      reactive\u5b9a\u4e49\u7684\u5f15\u7528\u5bf9\u8c61\uff1a<\/strong><\/p>\n
        \n
      • \u83b7\u53d6\u5f53\u524d\u503c\uff1awatch\u7b2c\u4e00\u4e2a\u53c2\u6570\u76f4\u63a5\u5199\u6210\u6570\u636e\u6e90\uff0c\u53ef\u4e0d\u7528deep: true\u9009\u9879<\/li>\n
      • \u83b7\u53d6\u5f53\u524d\u503c\u548c\u5148\u524d\u503c\uff1awatch\u7b2c\u4e00\u4e2a\u53c2\u6570\u5199\u6210getter\u51fd\u6570\uff0c\u5bf9\u6570\u636e\u6e90\u6df1\u62f7\u8d1d<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
        \u4eca\u5929\u5173\u4e8e\u300aVue3.2 \u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u5931\u6548\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n
        \n
        <\/dt>\n
        \n   Go \u4ee3\u7801\u4e2d `var _ io.ReadCloser = (*A)(nil)` \u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
        Vue3.2 \u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u5931\u6548\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f \u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aVue3.2 \u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u5931\u6548\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002 vue3.2\u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u95ee\u9898\u89e3\u7b54 \u5728\u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u5e76\u76d1\u542c\u65f6\uff0c\u5982\u679c\u5728\u5b50\u7ec4\u4ef6\u7684watch\u4e2d\u4e0d\u52a0\u4e0a\u7bad\u5934\u51fd\u6570\u5305\u88f9\uff0c\u5219\u76d1\u542c\u4e0d\u4f1a\u751f\u6548\u3002\u8fd9\u4e3b\u8981\u662f\u56e0\u4e3a\uff1a \u5b98\u65b9api\u8bf4\u660e \u6839\u636e\u5b98\u65b9api\u8bf4\u660e\uff0cwatch\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u53ef\u4ee5\u662fref\u6216getter\u51fd\u6570\uff1a watch(watchersource, callback, [watchoptions]) type watchersource<t> = ref<t> | (() => t) \u6b63\u786e\u7528\u6cd5 \u56e0\u6b64\uff0c\u5728\u5b50\u7ec4\u4ef6\u7684watch\u4e2d\uff0c\u5e94\u5c06tabledata\u6570\u636e\u6e90\u5199\u6210getter\u51fd\u6570\u7684\u5f62\u5f0f\uff0c\u5e76\u9700\u8981\u52a0\u4e0adeep: true\u9009\u9879\uff1a watch( tableData, (newVal) => {…}, { deep: true } ); \u8865\u5145\u8bf4\u660e \u5f53\u6211\u4eec\u4f7f\u7528watch\u4fa6\u542c\u5f15\u7528\u5bf9\u8c61\u65f6\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\uff1a ref\u5b9a\u4e49\u7684\u5f15\u7528\u5bf9\u8c61\uff1a \u83b7\u53d6\u5f53\u524d\u503c\uff1awatch\u7b2c\u4e00\u4e2a\u53c2\u6570\u76f4\u63a5\u5199\u6210\u6570\u636e\u6e90\uff0c\u9700\u52a0deep: true\u9009\u9879 \u83b7\u53d6\u5f53\u524d\u503c\u548c\u5148\u524d\u503c\uff1awatch\u7b2c\u4e00\u4e2a\u53c2\u6570\u5199\u6210getter\u51fd\u6570\uff0c\u5bf9\u6570\u636e\u6e90\u6df1\u62f7\u8d1d reactive\u5b9a\u4e49\u7684\u5f15\u7528\u5bf9\u8c61\uff1a \u83b7\u53d6\u5f53\u524d\u503c\uff1awatch\u7b2c\u4e00\u4e2a\u53c2\u6570\u76f4\u63a5\u5199\u6210\u6570\u636e\u6e90\uff0c\u53ef\u4e0d\u7528deep: true\u9009\u9879 \u83b7\u53d6\u5f53\u524d\u503c\u548c\u5148\u524d\u503c\uff1awatch\u7b2c\u4e00\u4e2a\u53c2\u6570\u5199\u6210getter\u51fd\u6570\uff0c\u5bf9\u6570\u636e\u6e90\u6df1\u62f7\u8d1d \u4eca\u5929\u5173\u4e8e\u300aVue3.2 \u7236\u5b50\u7ec4\u4ef6\u4f20ref\u6570\u7ec4\u76d1\u542c\u5931\u6548\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01 Go \u4ee3\u7801\u4e2d `var _ io.ReadCloser = (*A)(nil)` \u7684\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-52380","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=52380"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52380\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=52380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=52380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=52380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}